Gas burner



5 6 A 5 7 l N O S m K m w D G Nov 27 1923.

GAS BURNER Filed April 15 1922 0000060 00 0 qqoapoa oo 00 000 000000000000 oo'ooodasb o @0 0o 00ooooooQoooea oeooopoooo Patented Nov, 2?,i923,

UhlllTEE STATES.

earner errata,

GEORGE D. WILKINSON, OF OAK PARK, ILLINOIS, ASSIGNOR T CRIBBEN & SEK'EQNCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

GAS BURNER.

To all whom it my concern:

Be it known that I, GEORGE D. WILKIN- SON, a citizen of the UnitedStates, residing at Oak Park, in the county of Cook, State of Illinois,having invented certain new and useful Improvements in Gas Burners, dohereby declare that the followin is a full, clear, and exact description0 the same.

My invention relates to burners for ovens of gas stoves or ranges, andconsists in the novel and useful organizations and constructions hereindescribed and then pointed out in the appended claims.

In the accompanying drawings, which illustrate a practical embodiment ofmy present invention and in which the same reference numerals indicatesimilar parts in the difierent figures, Fig. 1 is a top plan view partlyin section of a gas range equipped with my oven-burner shown in positionin the oven; Fig. 2 is a detail sectional view on the line 2-2 of Fig. 1with the burner supply-pipes and stove strut ture broken away, and Fig.3 is a bottom plan view of the burner sections.

As shown in the drawings the reference "numeral 1 indicates'the frame ofthe stove,

- box 0 the open-top, a sheet metal partition 6 being removably arrangedbetween the ovens and above the oven gas-burner in the conventionalmanner, and the spaces be tween the walls 3, and 4 providing the finesthrough which the hot products of combustion pass upwardly from theburner and circulate around the baking chamber. The side fines areclosed at their front ends by the vertical strips 7 of the front-frameto which the oven doors are pivoted, the door for the lower oven beingshown at 8. The gas-supply manifold 9 is arranged in front of theburner-box of the open-top and is connected by suitable pipes to theusual series of burners 10 in the burner-box controlled by the usualvalves and having the usual secondary air-mixers.

The du lex oven burner is composed of outer and inner tubular sections.The outer or main section 11 is til-shaped inhorizontal outline orcontour, its parallel arms being Application filed April 15, 1922..Serial H0. 553,238.

spaced apart according to the size of the oven and sufiiciently toreceive between them the inner section which is T-shaped in corn tourand comprises a main tube or stem 12 and the cross bar or arms 13. Thestem 12 of the inner section is parallel with and in the horizontalplane of the arms of the section 11, and its base is supported on thebend of that section, and its cross arms 13 are supported on the forwardends of its arms; the sections are preferably cast-integral but areindependently supplied with the fuel mixture through their respectivesupply pipes 14' and 15 having the usual valved secondary air-mixers 16.The burner is detachably supported by its front and rear lugs 17fastened to brackets 18 on the oven walls, and is arranged with the bendof the main section 11 at the back of the oven and the cross-bar 13 ofthe inner section at its front, the sections extending from front torear of the oven as shown so that whether both sections are lighted oronly one section is lighted a center-heat burner is provided for theoven. The supply pipes lt and 15 are respectively connected to the freeend of one of the arms of the outer section and to the 'l of the innersection, and are curved or bent laterally at the front ends of thesections to pass to one side of the burner and through a suitableopening in the lining and sidewall between the oven and the burner-boxand are then bent or curved forwardly at the inner side of theburner-box to extend their air-mixers beyond the ,front line of theburner and out of the front of the burner-box, the opening preferablybeing large enough to allow the air-mixers to pass through it so thatall the burner parts can be removed and replaced as a unit. As thesupply pipes are arranged in the same horizdntal plane their air-mixers16 are in aline-. ment with the gas-manifold 8 and are spaced apart asuitable distance to register respectively with the gas-nozzles 19 and20 thereof, so that the controlling valves of the oven-burner and of theburners of the open-top are in alinement at the'front of the burner-box.Thegas-nozzles 19 and 20 may be controlled by i any suitable gasvalves,and preferably by a single valve 21 of the type shown in my atent No.1,445,984, dated February 20, 1923. The burners are made in rights andlofts, and

I the oven in correspon with their supply pi es are arranged in 'ngrelation with respect to the burner-box and the gas-manifold in bothright and left hand oven stoves. Both sections of the burner have gasports of jets on their under sides, those indicated at 22 for thesection 11 and for the main arm or stem 12 of the inner section beingpreferably arranged in double rows, while those indicated at 23 for thefront crossbar 13 of the inner section are in a single row on the innerside of its arms and extend in such proximity to the end jets of theinner rows in the arms of the section 11 that the fuel flowing from thelatter may be lighted from the flame of the former, the flame then beingcommunicated to the outer rows in the section 11 by the crossjetslocated at any suitable points. I

The primary function of the front crossbar 13 of the inner-section is toprovide heat in the front portion of the oven adjacent its doors, sothat the chilling effect of the outside air that may leak into the ovenaround the closed doors or pass into it when either door is open will becounteracted and overcome, wholly in the first instance and invgreatpart in the second. This ensures substantial uniform combustion and anequality of heat at the front and back of the oven, it is practicallyevenly distributed at the front and rear, and prevents chilling theoven. The secondary function of the front cross-bar 13 of this sectionis to provide a simple and convenient lighter or igniter for bothsections. As the cross-bar is at the front of the oven adjacent thedoors it forms an easy lighter for the entire burner. The operator caneasily and conveniently apply the match to the fuel issuing from thecross-bar at any point along the width of the oven within the zone ofits jets and without inserting the match any considerable distance intothe oven, and either the center section or both sections will be lightedaccording to the gas supply. Also, when the outer section 11 is turnedofl, leaving flame or fire only at the center section to provide a slowor reduced heat in the oven as is necessary when a low but even fire isdesired for baking requiring a stead but not an intense heat, thecross-bar 13 a ords a lighter for the section 11 when the latter isagain turned on; the cross-bar not only provides heat adjacent the ovendoors for the purposes above set forth while its section of the burneris thus operating for a slow fire, but it also provides flame adjacentthe jets of the outer section 11 which will ignite the gas passingtherethrough when this section is again to be used. Also, by providingthe center sect ion of the burner with the cross-bar the lighter is madeanintegral part of the burner, thereby simplifying. the constructionarness an equal distribution of heat throughout the oven as they arelocated at the center and their opposlte rows of flame extend in thedirection of the usual side flues of the oven, and as the centralsection will be left.

on full when the section 11 is extinguished to make low heat in thebaking chamber to prevent burning the food its flame will exert its fullforce to draw suflicient secondary-air through its mixing chamber 16 toensure complete combustion of the gas so that the flame is strong andnot easily extinguished, while at the same time as the flame is confinedto the jets of the center section it burns no more gas than an ordinarysingle loop burner when turned down to its low fire condition. The twosections provide a center-heat oven burner in which the flame is centralof the oven and is uniformly distributed to all its parts whetherv bothsections are lighted for maximum heat or only the center section islighted for low heat, and in either case the cross-bar of this sectioncompensates for air leakage into the oven and forms the lighter for theburner.

Also, the burner organization combines the advantages ofa central-heatoven burner and of locating its control in front of the open-top sectionof the range; as the supply pipes are bent laterally to one side of theoven burner and then forwardly to extend out through the burner-box they00- act with a gas-manifold which terminates in front of the open-topsection of the stove and does not extend in front of the oven section,and so the hot air from the oven cannot enter the air-mixers of theburner and interfere with its proper combustion when either oven door isopened, and the baking-oven door when opened does not obstruct access tothe oven burner valve, and all the valves for both the open-top and ovenburners are in alinement in front of the burner-box.

I claim:

1. A gas burner comprising a U-shaped section having its arms spacedapart and provided with gas jets, and an intermediate -shaped sectionprovided with gas jets in its stem and cross-arms and having the base ofits stem supported on the bend of the first section and its cross-armssupported on the forward ends of the arms of the first section, and anindependent supply of gas for each section of the burner.

2. A gas burner comprising an outer section composed of two connectedparallel arms spaced apart and having gas jets, and an intermediateT-sha-ped section separate from and supported on the first section withits cross arms atthe forward end thereof and having gas jets in its stemand crossarms, a fuel supply pipe leading to the free end of one of thearms of the outer section, and a fuel supply pipe leading to the T ofthe center section.

3. A gas burner comp-rising an outer section composed of two connectedparallel arms spaced apart and having gas jets, and an intermediateT-shaped section separate from and supported on the first section withits cross arms at the forward end thereof and having gas jets in itsstem and cross arms, and separate laterally and forwardly bent fuelsupply pipes leading to the sections, the gas ets of the cross-bar oftheintermediate section extending adjacent the jets of the arms of theouter section to provide a lighter therefor.

4. A gas burner comprising, an outer and a center sect-ion, the outersection being constructed of two connected parallel arms spaced apartand each having double rows of gas jets, the rows on each arm beingcol;- nected by cross jets, and the center section being constructed ofa stem and cross-bar supported on the outer section with its crossbar atthe forward end thereof, the stem having double rows of gas jets, andthe I cross-bar having a row of gas jets on its inner side locatedcontiguous to the inner t rows of jets of the arms of the outer section,

and supply pipes extending laterally from a the front ends of thesections to one side I thereof and forwardly beyond the front line ofthe sections.

In testimony whereof I ture.

GEORGE D. WILKINSON.

aflix my 1 sign a-

